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[linux] Expose ZSTD_compressSequencesAndLiterals() in the kernel

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Make the function ZSTD_compressSequencesAndLiterals() available in kernel
space. This will be used by Intel QAT driver.

Additionally, (1) expose the function ZSTD_CCtx_setParameter(), which is
required to set parameters before calling ZSTD_compressSequencesAndLiterals(),
(2) update the build process to include `compress/zstd_preSplit.o` and
(3) replace `asm/unaligned.h` with `linux/unaligned.h`.

Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
This commit is contained in:
Giovanni Cabiddu
2025-01-21 18:52:46 +00:00
parent ab54285129
commit 92be4be810
6 changed files with 64 additions and 4 deletions
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17
contrib/linux-kernel/zstd_compress_module.c
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@ -80,6 +80,12 @@ zstd_parameters zstd_get_params(int level,
}
EXPORT_SYMBOL(zstd_get_params);
size_t zstd_cctx_set_param(zstd_cctx *cctx, ZSTD_cParameter param, int value)
{
return ZSTD_CCtx_setParameter(cctx, param, value);
}
EXPORT_SYMBOL(zstd_cctx_set_param);
size_t zstd_cctx_workspace_bound(const zstd_compression_parameters *cparams)
{
return ZSTD_estimateCCtxSize_usingCParams(*cparams);
@ -216,5 +222,16 @@ void zstd_register_sequence_producer(
}
EXPORT_SYMBOL(zstd_register_sequence_producer);
size_t zstd_compress_sequences_and_literals(zstd_cctx *cctx, void* dst, size_t dst_capacity,
const zstd_sequence *in_seqs, size_t in_seqs_size,
const void* literals, size_t lit_size, size_t lit_capacity,
size_t decompressed_size)
{
return ZSTD_compressSequencesAndLiterals(cctx, dst, dst_capacity, in_seqs,
in_seqs_size, literals, lit_size,
lit_capacity, decompressed_size);
}
EXPORT_SYMBOL(zstd_compress_sequences_and_literals);
MODULE_LICENSE("Dual BSD/GPL");
MODULE_DESCRIPTION("Zstd Compressor");